Answer:
Military, trade and Sufis.
Explanation:
After the losing power by Abbasid Caliphate, Islam continued to spread across Afro-Eurasia due to various reasons such as military, trade and Sufis. some parts of the Afro-Eurasia captured through the power of military by the Muslims, some Muslim merchants went to different regions of Afro-Eurasia and many non-Muslims accept Islam because of the sincerity and good behaviour of Muslims. Sufis are the noble people who started preaching of Islam in Afro-Eurasia that cause the spread of Islam.